| Sigrid | Woman | Scandinavian Names |
| Sigrun | Woman | Scandinavian Names |
| Sigurd | Man | Scandinavian Names |
| Sigyn | Woman | Scandinavian Names |
| Silaine | Woman | Scandinavian Names |
| Siri | Woman | Scandinavian Names |
| Sissela | Woman | Scandinavian Names |
| Siv | Woman | Scandinavian Names |
| Sixten | Man | Scandinavian Names |
| Skule | Man | Scandinavian Names |
| Sky | Unisex | Scandinavian Names |
| Smilla | Woman | Scandinavian Names |
| Solveig | Woman | Scandinavian Names |
| Sonja | Woman | Scandinavian Names |
| Soren | Man | Scandinavian Names |
| Sorena | Woman | Scandinavian Names |
| Soroya | Unisex | Scandinavian Names |
| Spock | Man | Scandinavian Names |
| Spurgeon | Unisex | Scandinavian Names |
| Stellan | Unisex | Scandinavian Names |